INCH-POUND MIL-DTL-17/234 28 May 2016 DETAIL SPECIFICATION SHEET CABLES, RADIO FREQUENCY, FLEXIBLE, COAXIAL, 75 OHMS, LOW NOISE, LOW SMOKE, ENHANCED INSULATION RESISTANCE This specification is approved for use by all Departments and Agencies of the Department of Defense. The requirements for acquiring the product described herein shall consist of this specification sheet and MIL-DTL-17. FIGURE 1. General configuration. TABLE I. Description. Components Inner conductor Insulation First shield Second shield Jacket Construction details 26 AWG 19x38 silver copper plated alloy Overall diameter:.0189 nominal Expanded PTFE/PTFE tape composite Diameter:.080 inch +.004. Silver plated copper braid having 95% minimum coverage..086 inch nominal diameter. 38 AWG silver plated copper braid having 95% minimum coverage..104 inch nominal diameter. Extruded flouropolymer; Diameter:.125 inch +.005. AMSC N/A FSC 6145
ENGINEERING INFORMATION: Continuous working voltage: 3,700 V rms, maximum. Operating frequency: 1 GHz, maximum. Velocity of propagation: 82 percent, nominal. Operating temperature range: -55 to +200 C. Inner conductor properties: DC resistance, maximum, at 20 C: 0.65 ohms per 100 feet. Elongation: 15 percent, minimum. Tensile strength: 60 klb f /inch 2, minimum. Engineering notes: This cable useful in applications where electrical noise generated within the coaxial cable, due to flexure or vibration, must be limited. REQUIREMENTS: Dimensions, configuration and description: See figure 1 and table I. Environmental and mechanical: Visual and mechanical examination: Applicable. Adhesion of conductors: Inner conductor to core: 7 pounds, minimum; 50 pounds maximum. Aging stability: +98 ±2 C. Stress crack resistance: Not applicable. Outer conductor integrity: Not applicable. Cold bend: -40 C ±2 C. Special requirements: Magnetic shield continuity: One hundred percent of all finished cable shall be tested for shield continuity prior to shipment. To establish continuity, no more than 25V dc shall be applied across the shield through an appropriate indicator, such as an ohmmeter, light or buzzer. Magnetic shield: To be applied to the maximum tension possible so as to prevent loosening or creeping but not cause broken ends. Braids shall have no irregularities or loose unwoven strands. There shall be no splices of the completed braid. Dimensional stability: +85 C ±2C. 2
Inner conductor from core: 0.062 inch, maximum. Inner conductor from jacket:.130 inch, maximum. Contamination: Not applicable. Flame propagation: Applicable. Acid gas generation: 2.0 percent, maximum. Halogen content: 0.2 percent, maximum. Immersion test: Tensile strength, percent of unaged minimum: 50. Elongation, percent of unaged minimum: 50. Smoke index: 25 maximum. Toxicity index: 5 maximum. Durometer hardness (type A) 80 minimum. Weathering: Applicable. Abrasion resistance: 75 cycles minimum (jacket only). Tear strength: 35 pounds per inch. Heat distortion: 30 percent maximum. Physical tests on unaged jacket: Tensile strength: 1,300 psi, minimum. Elongation: 160 percent, minimum. Physical tests on aged jacket: Air oven: Tensile strength, percent minimum: 60. Elongation: percent minimum: 60. Hot oil immersion: Tensile strength, percent minimum: 50. Elongation, percent minimum: 50. 3
Tensile strength and elongation: 1,300 psi, 160 percent minimum. Weight: 0.235 Lbs/ft, maximum. Electrical: Spark test: 5,000 Vrms, +25 percent, -0 percent. Voltage withstanding: 10,000 Vrms, minimum. Insulation resistance: 300,000 megohms, minimum per 1,000 feet (center conductor to outer conductor) at 1,000 V dc. 1,500,000 megohms, minimum per 200 feet (center conductor to outer conductor) at 1,000 V dc. 10 megohms, minimum per 1,000 feet (outer conductor to magnetic shield) at 500 V dc. 50 megohms, minimum per 200 feet (outer conductor to magnetic shield) at 500 V dc. 15 megohms, minimum per 1,000 feet (magnetic shield to outer jacket surface) at 500 V dc. 75 megohms, minimum per 200 feet (magnetic shield to outer jacket surface) at 500V dc. Corona extinction voltage: 5,000 V rms, minimum. Characteristic impedance: 75 ±5 ohms. Attenuation: 100MHz - 5dB/100ft 400MHz - 10dB/100ft 500MHz - 12dB/100ft 1GHz - 17dB/100ft 2GHz - 24dB/100ft Structural return loss: Not applicable. Capacitance: 17pF per foot, maximum. Capacitance unbalance: Not applicable. Transmission unbalance: Not applicable. Mechanically induced noise voltage: 320 microvolts peak to peak, maximum. Time delay: Not applicable. Shielding effectiveness: Frequency range:.00006 -.01 MHz. Surface transfer impedance, 8.184 milliohms/meter, maximum. Frequency range:.0101 100 MHz. Surface transfer impedance, 11.296 milliohms/meter, maximum. Surface transfer impedance measurements performed in accordance with SAE-AS85485. Testing performed with outer conductor shield and magnetic shield connected together on both ends and is considered the Shield in the test procedure. 4
TABLE II. Tools (Installing and Removing). Bin Code 660 Inner Contact Tooling Basic Crimping Tool MH992 Daniels Contact Positioner K1605 Daniels Outer Contact Tooling Basic Crimping Tool M22520/5-01 Die Part Number M22520/5-03 Cavity A Installing Tool M81969/8-09 OR M81969/14-04 Removal Tool M81969/8-10 OR M81969/14-04 Part or Identifying Number (PIN): M17/234-00001 Referenced documents. In addition to MIL-DTL-17, this document references the following: SAE-AS85485 CONCLUDING MATERIAL Custodians: Preparing activity: Army - CR DLA - CC Navy - EC Air Force 85 (Project: 6145-2016 - 012) DLA - CC Review activities: Army - AR, AT, CR4, MI Navy - AS, MC, OS, SH Air Force - 19, 99 NOTE: The activities listed above were interested in this document as of the date of this document. Since organizations and responsibilities can change, you should verify the currency of the information above using the ASSIST Online database at https://assist.dla.mil. 5